How do I determine the pitch or frequency of a sustained note? -Sound Forge - PC

Subject:How do I determine the pitch or frequency of a sustained note? Posted by: wiseganesha Date:6/6/2000 11:46:00 PM I have some samples of single notes sustained that I need the exact frequency of in Hz for some physics demonstrations I am doing. I am attempting to compare the frequency of the incoming sound of a passing car with that of its retreat. thanks
Subject:Re: How do I determine the pitch or frequency of a sustained note? Reply by: Siggi_Churchill Date:6/7/2000 11:28:00 AM You can try using the spectrum analysis plugin which will show the dominant frequency at any given time in Hz and actual note pitch. If that doesn't help you will probably have to sit down with a synth and figure it out by ear. You can then create pure sine waves with sound forge that will match your car pass frequencies and check them against the car. FFT should do the trick though. George Hay wrote: >>I have some samples of single notes sustained that I need >>the exact frequency of in Hz for some physics >>demonstrations I am doing. I am attempting to compare the >>frequency of the incoming sound of a passing car with that >>of its retreat. >> >>thanks
Subject:Re: How do I determine the pitch or frequency of a sustained note? Reply by: DataCowboy Date:6/9/2000 3:17:00 PM To show comparison of the two you will probably have to show a series of spectral analyzes from the feature that Andrew mentioned, because the pitch of the sound created by moving vehicle will be changing throughout it's travel, and will not be a constant based solely on its direction in relation to the observer. It's all a matter of how detailed you need to get - if you need the very specific root and/or dominant frequency at at certain time, you may have to go so far as to visually slicing out single waveforms at spcific times and using each waveform's sample length to get the Hz at that time (Hz = (samples in waveform) divided by (sample rate, 44100 for CD audio). For a good overview with meaningful pitches (but not overly specific), the spectral analysis would be perfect. Chris www.thefreeside.com Andrew Linhart wrote: >>You can try using the spectrum analysis plugin which will show the >>dominant frequency at any given time in Hz and actual note pitch. If >>that doesn't help you will probably have to sit down with a synth and >>figure it out by ear. You can then create pure sine waves with sound >>forge that will match your car pass frequencies and check them against >>the car. FFT should do the trick though. >> >>George Hay wrote: >>>>I have some samples of single notes sustained that I need >>>>the exact frequency of in Hz for some physics >>>>demonstrations I am doing. I am attempting to compare the >>>>frequency of the incoming sound of a passing car with that >>>>of its retreat. >>>> >>>>thanks

Subject:How do I determine the pitch or frequency of a sustained note?

Posted by: wiseganesha

Date:6/6/2000 11:46:00 PM

I have some samples of single notes sustained that I need
the exact frequency of in Hz for some physics
demonstrations I am doing. I am attempting to compare the
frequency of the incoming sound of a passing car with that
of its retreat.

thanks

Subject:Re: How do I determine the pitch or frequency of a sustained note?

Reply by: Siggi_Churchill

Date:6/7/2000 11:28:00 AM

You can try using the spectrum analysis plugin which will show the
dominant frequency at any given time in Hz and actual note pitch. If
that doesn't help you will probably have to sit down with a synth and
figure it out by ear. You can then create pure sine waves with sound
forge that will match your car pass frequencies and check them against
the car. FFT should do the trick though.

George Hay wrote:
>>I have some samples of single notes sustained that I need
>>the exact frequency of in Hz for some physics
>>demonstrations I am doing. I am attempting to compare the
>>frequency of the incoming sound of a passing car with that
>>of its retreat.
>>
>>thanks

Subject:Re: How do I determine the pitch or frequency of a sustained note?

Reply by: DataCowboy

Date:6/9/2000 3:17:00 PM

To show comparison of the two you will probably have to show a series
of spectral analyzes from the feature that Andrew mentioned, because
the pitch of the sound created by moving vehicle will be changing
throughout it's travel, and will not be a constant based solely on
its direction in relation to the observer.

It's all a matter of how detailed you need to get - if you need the
very specific root and/or dominant frequency at at certain time, you
may have to go so far as to visually slicing out single waveforms at
spcific times and using each waveform's sample length to get the Hz
at that time (Hz = (samples in waveform) divided by (sample rate,
44100 for CD audio). For a good overview with meaningful pitches
(but not overly specific), the spectral analysis would be perfect.

Chris
www.thefreeside.com

Andrew Linhart wrote:
>>You can try using the spectrum analysis plugin which will show the
>>dominant frequency at any given time in Hz and actual note pitch.
If
>>that doesn't help you will probably have to sit down with a synth
and
>>figure it out by ear. You can then create pure sine waves with
sound
>>forge that will match your car pass frequencies and check them
against
>>the car. FFT should do the trick though.
>>
>>George Hay wrote:
>>>>I have some samples of single notes sustained that I need
>>>>the exact frequency of in Hz for some physics
>>>>demonstrations I am doing. I am attempting to compare the
>>>>frequency of the incoming sound of a passing car with that
>>>>of its retreat.
>>>>
>>>>thanks